Combined floating aiding device used for large semi-submersible vessel and construction method thereof

Abstract

The invention provides a combined floating aiding device used for large semi-submersible vessel and a construction method thereof, and belongs to the technical field of large ships and ocean engineering construction. The floating aiding device includes floating box bodies, a connection plate, a linkage device, a buoyancy control mechanism and a limit and buoyancy transfer mechanism. Each floatingbox body is of a steel-made watertight box structure, a conventional shipbuilding method is adopted, and the floating box bodies are connected through connection plates and can be assembled into a large-scale floating aiding devices of different sizes. The floating aiding device is simple in structure and easy to manufacture, the floating box bodies are relatively independent, and internal inspection and repair are facilitated. The application range is wide, and the device can be assembled in a dock to be suitable for different ships. Floating and sinking of the whole floating box can be controlled only by one air discharge pipe and an air pump. Disassembly and assembly are convenient, underwater operation is not needed, the device can be reassembled to be suitable for other ships or offshore platforms after disassembly, and the device can be reused.

Description

technical field [0001] The invention relates to a combined buoyancy aid device for large semi-submersible ships and a construction method thereof, belonging to the technical field of large ships and marine engineering construction. Background technique [0002] The self-weight of ships and offshore platforms is gradually increasing. For example, a semi-submersible pipe-laying ship with a total weight of 10W tons has a larger hull, with a length of 200 meters and a width of 60 meters. These ships are basically built in workshops. The inner section is built, and the section and the total section are closed in the dock. After the closing is completed, water is injected into the dock so that the draft of the ship meets certain requirements and enters the predetermined channel for the next step of outfitting and testing. Affected by the size of the dock itself and the limitations of the allowable construction capacity, during the construction and sailing of the ship platform, it ...

AI Technical Summary

Problems solved by technology

At present, there are two methods commonly used by major shipyards. One is to use integral steel buoyant tanks to aid buoyancy. This kind of integral buoyant tanks is bulky, difficult to construct, transport, and store, and has a small scope of application. Detailed design is required before production.

Another method is to install only part of the equipment in the dock to reduce its own weight. This method will lead to a longer construction period, and the installation of equipment at sea is more complicated and less economical.

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